Question

The stress-strain curve can be expressed linearly by the use of _________

(a) Cauchy’s principle

(b) Fourier series

(c) Taylor’s series

(d) D’Alembert theorem

I got this question during an online interview.

This intriguing question comes from Elasticity, Relaxation Processes and Spring Dashpot Models in section Plastic Deformation and Creep in Crystalline Materials, Elastic, Anelastic and Viscoelastic Behaviour of Engineering Material & Metallurgy

Answer 1

Right option is (c) Taylor’s series

For explanation I would say: The stress-strain curve is used to describe the elasticity of materials. This curve is generally non-linear. However, Taylor’s series may be used to express it linearly for small deformations.